Interesting that Cohen's counsel neither confirms nor denies the report.
Sounds like there is something there but the Special Counsel disputes the wording used and the notion that it emanates from his team.
From the defence perspective, I am afraid it says nothing generally about press coverage. This is the only time Mueller has interceded.
It does signal something else: that the integrity of the investigation matters to Mueller. If Trump's defence team relies on Mueller today, I presume it won't hypocritically claim bias in the future.
Oh wait.